# Hands vs Environmental Science Quiz

The clearest difference is device support: Environmental Science Quiz at 3 against Hands's 1. Environmental Science Quiz also leads on price ($1.99 vs $2.99). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Hands costs $2.99 and Environmental Science Quiz $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hands ships an update every 25 months, Environmental Science Quiz every 40 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Hands | Environmental Science Quiz |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 25 months** | Every 40 months |
| Size | 36 MB | 21 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Coskun CAKIR](https://appshunter.io/developer/482066275) |

## What reviewers say

### Hands

[App page](https://appshunter.io/ios/app/hands-on-math-tangrams/id778907489)

**Features:** macOS Compatibility

**In-app purchases:** none


### Environmental Science Quiz

[App page](https://appshunter.io/ios/app/environmental-science-quiz/id1359191108)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hands free?

Hands costs $2.99, with no in-app purchases.

### Is Environmental Science Quiz free?

Environmental Science Quiz costs $1.99, with no in-app purchases.

### Do Hands or Environmental Science Quiz have ads?

Neither Hands nor Environmental Science Quiz shows ads.

### Which is updated more often, Hands or Environmental Science Quiz?

Hands ships an update every 25 months, and Environmental Science Quiz every 40 months. Most recently, Hands was updated on October 26, 2026 and Environmental Science Quiz on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*